Variable Variable Observations Univariate Univariate Multivariate Multivariate
Hazard ratio p-value Hazard ratio p-value
Age at implant ≤18-year-old 76 Reference 0.38 Reference 0.29 a
18-year-old< 0.65 (0.24-1.71) 0.59 (0.22-1.56)
Sex Female 76 Reference 0.48 Reference 0.32 b
Male 1.40 (0.54-3.63) 1.62 (0.62-4.30)
Congenital heart defect No 76 Reference 0.91 Reference 0.0.71 b
Yes 1.06 (0.41-2.75) 0.81 (0.27-2.42)
Ventricular location Right ventricle 66 Reference 0.25 Reference 0.28 b
Left ventricle 0.54 (0.19-1.53) 0.56 (0.20-1.59)
LVEF >45 77 Reference 0.49 Reference 0.18 b
<=45 1.41 (0.52-3.82) 2.14 (0.70-6.54)
Pacing threshold at discharge <=3µJ 64 Reference 0.32 Reference 0.34 b
>3µJ 2.12 (0.48-9.28) 2.09 (0.46-9.42)